Mr Lucky Posted November 24, 2021 Posted November 24, 2021 I am making a landscaping plan and have made a curve representing a pathway, kind of an S shaped curve. To make life easy I have scaled the plan so 1 cm represents 1 metre and this woprks really well for rectangles etc to fine the sq m, but this is trickier for curves. So that I can give the paving contractors a good idea of the area they need to quote for, I'd like to be able to work that out from my plan. Does anyone know of a way to do this? Quote
Alfred Posted November 24, 2021 Posted November 24, 2021 PDF-XChange Editor can tell you the areas (and lengths of perimeters) of any vector curves in a PDF file, but it’s only available for Windows. Perhaps someone else here knows of a similar application for macOS. Quote Alfred Affinity Designer/Photo/Publisher 2 for Windows • Windows 10 Home/Pro Affinity Designer/Photo/Publisher 2 for iPad • iPadOS 17.5.1 (iPad 7th gen)
v_kyr Posted November 24, 2021 Posted November 24, 2021 ImageJ is a free Java based app (developed on MacOS but in Java) which offers such things, it can analyze and measure from images and there are plugins for other file formats and techical usage areas etc. - See: ImageJ features ImageJ intro ImageJ documentation ImageJ Analyze menu ** <--- ImageJ Plugins ** ImageJ Download OSX Installation ... etc. Quote ☛ Affinity Designer 1.10.8 ◆ Affinity Photo 1.10.8 ◆ Affinity Publisher 1.10.8 ◆ OSX El Capitan ☛ Affinity V2.3 apps ◆ MacOS Sonoma 14.2 ◆ iPad OS 17.2
thomaso Posted November 25, 2021 Posted November 25, 2021 This post and below might help for a workaround within Affinity: Quote macOS 10.14.6 | MacBookPro Retina 15" | Eizo 27" | Affinity V1
firstdefence Posted November 25, 2021 Posted November 25, 2021 If you highlight two nodes with the node tool it gives you the length between those two nodes in the Transform panel under L: Quote iMac 27" 2019 Sequoia 15.0 (24A335), iMac 27" Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Vectorstyler, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 (Please refrain from licking the screen while using this forum) Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions
G13RL Posted November 25, 2021 Posted November 25, 2021 I had noticed this before, but for me (W 10), the value indicated by L does not indicate the length between two nodes. Quote
firstdefence Posted November 25, 2021 Posted November 25, 2021 @G13RL Damn, I tested it with a curve and a straight line and there was a difference but obviously I didn't push the envelope enough. Quote iMac 27" 2019 Sequoia 15.0 (24A335), iMac 27" Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Vectorstyler, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 (Please refrain from licking the screen while using this forum) Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions
G13RL Posted November 25, 2021 Posted November 25, 2021 @firstdefence Since you found a difference on Mac, perhaps the problem is related to Windows? Quote
thomaso Posted November 25, 2021 Posted November 25, 2021 1 minute ago, G13RL said: Since you found a difference on Mac, perhaps the problem is related to Windows? Also on Mac it just measures the straight distance between two nodes in the displayed angle (regardless of the curve). The label L for lengths is misleading. Quote macOS 10.14.6 | MacBookPro Retina 15" | Eizo 27" | Affinity V1
PaulEC Posted November 25, 2021 Posted November 25, 2021 1 minute ago, thomaso said: Also on Mac it just measures the straight distance between two nodes in the displayed angle (regardless of the curve). The label L for lengths is misleading. Same as on Windows, so I assume this is "as intended", but, as you say, a bit misleading - also not so useful! Quote Acer XC-895 : Core i5-10400 Hexa-core 2.90 GHz : 32GB RAM : Intel UHD Graphics 630 : Windows 11 Home Affinity Publisher 2 : Affinity Photo 2 : Affinity Designer 2 : (latest release versions) on desktop and iPad "Beware of false knowledge, it is more dangerous than ignorance." (GBS)
G13RL Posted November 25, 2021 Posted November 25, 2021 @thomaso and @PaulEC, thanks for the feedback, and as @PaulEC says, it's not very useful. Quote
v_kyr Posted November 25, 2021 Posted November 25, 2021 19 hours ago, Mr Lucky said: I am making a landscaping plan and have made a curve representing a pathway, kind of an S shaped curve. To make life easy I have scaled the plan so 1 cm represents 1 metre and this woprks really well for rectangles etc to fine the sq m, but this is trickier for curves. So that I can give the paving contractors a good idea of the area they need to quote for, I'd like to be able to work that out from my plan. Well beside what was already said above, doing so with the help of some third party tool, which is capable to measure and calculate curved surfaces, lines and paths etc. there are only more manual options. Math - If you know the length and width data of the S shape curve, use good old school math formulas for that, aka Integral calculus for area calculations (from Analysis 2 subject areas). - That would give you the most exakt results then. Visually - A manual method for a visual usage way in case of Affinity software would probably be, to use a very well defined small scaled grid for manual measurement/counting (a bunch of small rects which do fit into the S shape area) combined with performing some good approximation to the surface of that S shape curve. Quote ☛ Affinity Designer 1.10.8 ◆ Affinity Photo 1.10.8 ◆ Affinity Publisher 1.10.8 ◆ OSX El Capitan ☛ Affinity V2.3 apps ◆ MacOS Sonoma 14.2 ◆ iPad OS 17.2
Mr Lucky Posted December 4, 2021 Author Posted December 4, 2021 Thanks so much everyone, lots to try out here. Quote
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